Door-engine control circuits



G. OAKLEY.'

nooR ENGINE coNTRoL cmcuns.

APPLICATION FILED AUGIZB, 1919. l AQL'Y.. Patented. Aug. L 1922.

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DOOR-ENGINE CGNTRL CRCETS.

Specieation of Letters Patent.

Patented ring'. i, i922.

Application fried August 28, 1919. Serial No. 320,387.

To all lr1/0m t may concern.'

Be it known that l, Grenen Gartner, a citizen ot the United States, residing at albany, in the county of Albany and State oi' New York, have invented certain new and useful improvements in Door-Engine Control Cin cuits, the following being a full, clear, and exact disclosure et the one torni of my in yention wl ich l at present deem preferable.

For a detailed description or' the present form or my invention, reference may be had to the followiino,l specification and to the accompanying drawings tforming a part thereof.

lin the control el? car-door engines oi2 the pneumatic type, it is well known that electromagnets are 'frequently employed to operate the proper engine valves for the opening,` and closing` movements ot the rc spective engines. These magnets are usually' in circuits which are dominated by pushbutton switches that the opera-tor presses to either open or close the doors. Such apparatus is so well known as to require no illustration thereof herein, only the circuits, switches, and magnets being shown in the drawings.

ln such an arrangement it has occurred that atter the operator has pressed the dooropening` buttons, the engine of one particular door fails to respond by reason ot the sticking ot the door. This failure remaining` unnoticed, the operator subsequently may fail to press the closingY button ofthe detective door, but will press those oil all the doors which are open. n

At the door which ifailed te open, how` over, the valve remains set in theopen position and the movement oi? the restarted train may jai-the door su'l'liciently te release it and, as it is set to open, it will so operate and open unexpectedly, while the train is running, probably with disastrous results.

It is the purpose of my present invention to prevent an accident ot that kind. l accomplish lthis in an extremely simple way by an interlock circuit containing at each door a switch so arranged that its contacts are closed when the door is closed. This switch connects the closing' valve magnet for each door to the said interlock circuit and said circuit is thereby energized when any closing,` button Yl'or any door on the same side or' the car is pressed. Thus, in case any door lails to open as above described, its valve is sure to be thrown to the closed or sarteposition by the mere pressing` or the closing button for any other door. Hence no valve can be lett in an open position when it should be in closed position.

rihe drawingl shows the circuits having three doors on each side.

rlie doors on one side ot a car constitute a separate group having its own circuits, and the push-buttons therefor may be located at any convenient position. ns shown in the drawing, there are at the lett end of the car, at l), two sets et push-buttons dominating the door at the same end, also the center door on one side of the car. the right end at D2 are Correspending,` buttons dominating` the door at that end, also the center door on the same side. On the opposite side et the car, at D1 and D3 are similar push-buttons similarly dominating the doors on that side. Each door has a magnet .l which controls the closing action of the door-operating engine for that door, also a magnet F controlling,` its opening` action. or example, when button l is pressed, it closes a circuit from B, through opening,` magnet h" at the center door to ground, and when button 2 is pressed it closes a circuit :trom B through the opening magnet F at Y the lett end door. Similarly the pressing," of button 3 closes a circuit from Bv through the closing magnet E at the center door and the pressing; ot button e closes a similar curcnit through closing magnet E at the lei't end door. rlhe same system is hillowed at vall of the other buttons, and there is no novelty in that arrangement.

l represents a wire forming a supplementary circuit which :i term an interlock circuit. At A, n, etc., are switch contacts that are held closed, so" long as the doors correspondinp thereto respectively are closed. These contacts connect said wir h1 to the circuitot' the corresponding closing magnets E at every door and, if any doorl fails to open, it will leave the said circuit l so connected.. By this means the Subscquent pressing oit the door-closing button y 105 tor any individual door will act, through the contacts lett closed at A, to energize any oi the closing; magnets lil on the same side ot the car Vwhich may be improperly in the open position. For example, the pressing oi button 3 will not only admit current from B to magnet E at the center door but also to the magnet E of the lett end door andof the opposite end door on the same side of the car, in the event of the wire K being left `connected to either of -Vtheir closing magnets, by the Yfailure oit either door to open and breakthat connecm tion at its contacts A.

lt therefore `any one ot the three doorsr has failed to open when its opening magnet F has acted to set the valve oil its engine `to the opening position, the subsequent pressing ot button 3, or anyone ot the other closing buttons 4,7 andy 8 will energize the magnet E at the door which. has tailed to open, as well as the magnet lil at the door or ldoors 'normally controlledbT the button. pressed. Thereby the detective .door is not lettwithl its engine valve set to opening' position and in danger of being` opened after thetrain has started. This arrangement does not-nr tertere with the individual control oi'the several doorsby their individual opening` and closing buttons.

"llhat l claim as new and desire te secure `:by Letters Patent is:

l; lnadoor operating systemthecombination with a door of a dooik closing circuit including awinagnet, a switch 'lor initiating the closing' action ol `the door when the lat y ter is open, and a supplemental circuit controlled by the `door lorenergizing the same magnet while the door is closed.

2. ln a door operating` system the coinbi Ynation with a 'door'including a magnet and switch 4for initiating the closing action of a door when thev latter is open, and a supplemental circuit including` the same magnet and an energizing switch, said last mentioned switch being held in closedposin tion while the door is closed.V

4L. In a door ol'ierating system the combi-y nation with a pluraty oj doors oi" a'correspending number o'l circuits including magnets and switches :For initiating the closing. movements of the respective Vdoors when the n latter are open, and a common supplemental control circuit including` all. ot the said magnets, and energizing` switches for the said control circuit normally maintained in closed position by the respective doorswhen they ,are closed.

each door and controlled by the latter.

6. In a door-operating system the combination with a series oir' doors of a series of magnets y controlling` the opening; of the doors, a second seriesof magnets controlling the closing ot the doors, individual switches tor each of vthe opening magnets, .individual switches for eachot the closing magnets, and an interlocltcircuit by which each of the closing-magnet switches can op erate all oit the closing magnets.

7. ln a door-operating system, the combinationwith a seriesv oi'rdoors, ot an engine for closing each of the ydoors individually,

`magnets controllingthe opening action and` the closing` action separately tor the respective doors, an individual switch tor `each magnet and an interloclf circuit by` which each oli-the closing' switches can energize all ol' the closingv magnets. l

8. l-n a door-operatingsystem, the fcombination with a series yolv doors ot two sets ot magnets, one set controlling the opening and the other set controllingthe closing ot the respective doors, individual switches lor theseveral magnets, and an interloclr circuit controlled `by, each oi:4 the` door-closing switches and including all` of the door-closing magnets. i

9. ln a door-closing system. the combination with a series of doors and their respective operating devices, el two sets of magnets, one controlling thefclosing and the otherthe opening action of said devices, viiidividual ,switches tor each ot theseveral magnets and an interloclrcircuit containing eircuit-closers controlled by the position `ot' the doors and dominated by each oi' the closing switches. j

l0. ln a door-closing system 'for cars the combination with a group ot doors on the same side ol a car, .ot a series oil' magnets controlling the opening` and closinny ol theA doors and switches 'for said magnets, and a locking' circuit` dominated by `the door-closl ing' switches and serving to energize all of' the door-closingmagnets... Y

Signed at Albany, county o'l Albany and State oit New York, this 22nd day of August, 1919.

encuen t oiiinnr. 

